The Approach External is identified by letter "X" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 2W37X
Immobilization of Left Inguinal Region using Splint
Immobilization of Left Inguinal Region using Cast
Immobilization of Left Inguinal Region using Brace
Immobilization of Left Inguinal Region using Other Device